(nonstandard in some uses but often idiomatic with measure phrases) fewer; "less than three weeks"; "no less than 50 people attended"; "in 25 words or less"
(usually preceded by `no') lower in quality; "no less than perfect"
used to form the comparative of some adjectives and adverbs; "less interesting"; "less expensive"; "less quickly"
comparative of little; "she walks less than she should"; "he works less these days"
a fastener consisting of a peg or pin or crosspiece that is inserted into an eye at the end of a rope or a chain or a cable in order to fasten it to something (as another rope or chain or cable)
any instruction that works first one way and then the other; it turns something on the first time it is used and then turns it off the next time
release by a toggle switch; "toggle a bomb from an airplane"