part of speech: preposition

definition 1: on or in the location of.

  • We played volleyball at the beach.

definition 2: on or upon the occurrence of; during the time of.

  • She moved to the city at the end of the year.

definition 3: in the direction of; toward.

  • Look at the moon.

definition 4: engaged in the action of.

  • Don’t disturb him when he’s at work.

definition 5: concerning; about.

  • We were all excited at the possibility of winning first prize.